One of the special features of Group III and IV detonators is higher resistance against unintentional initiation by foreign sources of electric energy (stray currents, electrostatic discharge, radio or radar waves, atmospheric discharges). Group III detonators are especially suitable for blasting in residential areas. Group IV detonators are used in blasting operations with highest risk of unintentional initiation (high voltage lines, railway corridors, etc.) Detonators of all groups are suitable for standard blasting operations.

STORING

Detonators must be stored in an approved magazine located to conform to state and local laws and regulations. The storage place should be well built, well air-conditioned, clean, dry, fire resistant and securely locked when not in use. Detonators should never be stored in the same magazine with other explosives.